| 主权项 |
1. A gearbox having a gearbox case containing a gear train comprising gears and shafts supporting the gears, said gearbox case to be fastened to a mounting plate, said gear train having at least input and output shafts, each passing through a wall of the case, and mounted for rotation within and supported by the gearbox case, said input shaft for receiving torque from an external source, said input shaft carried for rotation by an input shaft bearing carried on a wall of the gearbox case, and providing torque to the gear train; said output shaft deriving torque from the input shaft, for supplying torque substantially greater than the torque applied to the input shaft, and carried for rotation by first and second output shaft bearings, wherein the exterior of the case includes a flat surface carrying exactly first, second, and third spaced apart mounting surfaces, each mounting surface having at least one bolt engaging the mounting surface for attaching the case to the mounting plate only at the respective mounting surface, and wherein said first output shaft bearing is mounted on the case at a point between the first, second, and third mounting surfaces;
wherein the mounting surfaces are all carried on a single flat surface of the case; and wherein each mounting surface has a plurality of mounting holes, each to receive a bolt to fasten the mounting surface to the mounting plate. |
